公开(公告)号：US20040119891A1

公开(公告)日：2004-06-24

申请号：US10678967

申请日：2003-10-03

Applicant: STMICROELECTRONICS S.A.

Inventor： Christophe Barnichon

IPC: H04N005/46

CPC classification number: H04N7/0122 ,  H04N21/4884 ,  Y10S348/913

Abstract: A system and method are provided for displaying a video composed of images each comprising a predetermined number M of lines and, a predetermined number N of pixels in each line. Values of a predetermined number P of reference pixels for each line of a current image of the video are stored in memory, where P is less than N. For each line of the current image, the value of a parameter associated with the line is determined, with the parameter corresponding to the number of the reference pixels of the line that are black according to a first predetermined criterion. A first nonblack line and a last nonblack line of the current image are determined to serve as a basis for an automatic reframing of the images of the video before display. The first nonblack line of the current image is determined by excluding, starting from a first line of the image, the lines of the image which are black according to a second predetermined criterion based on the parameter, and the last nonblack line of the current image is determined by excluding, starting from a last line of the image, the lines of the image which are black according to the second predetermined criterion based on the parameter.

Abstract translation: 提供了一种系统和方法，用于显示由图像组成的视频，每个图像包括预定数量的行和每行中的预定数量的N个像素。 视频的当前图像的每一行的预定数量P个参考像素的值被存储在存储器中，其中P小于N.对于当前图像的每一行，确定与该行相关联的参数的值 具有与根据第一预定标准为黑色的线的参考像素的数量相对应的参数。 确定当前图像的第一非黑色线和最后一条非黑色线作为显示之前的视频图像的自动重构的基础。 当前图像的第一非黑色线通过从图像的第一行开始，基于参数根据第二预定标准排除黑色的图像的行，并且将当前图像的最后一条黑线除去 通过从图像的最后一行开始，基于参数从根据第二预定标准排除黑色的图像的行来确定。